You can just download the Skype App for android and talk that way... Whenever I am out working that is how I talk to my girlfriend. She goes on the computer and I use my phone (phone to phone also works she just has a blackberry torch).

I was just going to mention that he could use skype. Really the only "smart" device out there that doesn't have Skype (to my knowledge) is the Blackberry Playbook, all other smart devices, phones (touch ones anyways) and tablets can use it. Plus its free AND you can use it as an instant messenger or voice chat rather then just video chat.